Added view for all Todos, added possibility of updating todo

src/main/java/service/TaskService.java

@@ -1,6 +1,7 @@
 package service;
 
 import dto.TaskCreateDto;
+import dto.TaskUpdateDto;
 import models.Task;
 import repository.TaskRepository;
 
@@ -46,4 +47,23 @@ public class TaskService {
         }
     }
 
+    public Optional<Task> updateTask(TaskUpdateDto  taskUpdateDto) {
+        try {
+            return taskRepository.update(taskUpdateDto);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return Optional.empty();
+        }
+    }
+
+    public Boolean deleteTask(int taskId) {
+        try {
+            return taskRepository.delete(taskId);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+
 }